Caite, do you have the same issue if you just republish the entire dashboard?
Normal workflow (at least as I do it!) is to make changes to individual worksheets, but only publish the dashboard. Doing it the way you're doing it can cause problems (as you have seen).
Hi - yes, this is how I tend to do it - keep the worksheets unpublished, then publish the dashboards.
I think I figured out that the issue is probably Edge. Once I switched to IE, my dashboards started updating automatically.
Both Edge and IE are awful, but I had been having issues with Chrome, which is my preferred browser.